Why did the mayans create a detailed writing system?

to keep track of trade
to keep track of the seasons
to keep track of political rules
to keep track of families

They want to keep track of their political rulers,

As the researchers say, that the Mayans respect their leaders and rulers like a god who gives everything they need. That's why it is important for the to keep a record of their leaders so that/s how they have created their detailed writing.